High-Performance Embedded Computing

7.4 Hardware/Software Co-synthesis Algorithms 401

COSYMA The block diagram of the COSYMA system is shown in Figure 7-9. The

application is described in C

X

, which extends C with some task constructs and

timing constraints. That description is compiled into an intermediate form called

an ES graph. The ES graph represents the control and data flow in the program

in a way that can be rewritten either as a hardware description or an executable

C program. (COSYMA also includes a simulator for ES graphs.) The ES graph

is composed of basic scheduling blocks (BSBs) that are the primary units of

co-synthesis. COSYMA uses simulated annealing to search the design ...